Combined batteries and charger for radio systems



2 Sheets-Seet l A. VORBERG, JR

COMBINED BATTERIES AND CHARGER FOR RADIO SYSTEMS Filed Nov. e. 1924 Augfl' 1926.

Invenl'or. lberb irberg, Jn,

I Jilig.

Aug. 17 1926.. 14,596,131

A. VORBERG, JR

COMBINED BATTERIES AND CIV'IARGER FR RADIO SYSTEMS` Filed 1924 2 Sheets-Sheet 2 GOOG@ G Lwenlzor: C) C 61 lberb Verberg, Tm

Patented Aug. 17, 1926.

UNITED STATES `ALBERT vonnnac, .m, o1=' ARLINGTON,

QUALITY PncnUcTs conr.. or MASSACHUSETTS.

MASSACHUSETTS, ASSIGNOR TO PERRINE BOSTON, MASSACHUSETTS, A CORPORATION Ol' COMBINED BATTERIES AND .CHARGER FOB RADIO SYSTEMS.

Application led November 6, 1924. Serial No. 746,266.

This invention relates to batteries for ra" dio receiving `sets and means for charging the same, the object of the present invention being to provide a compact cabinet in which are installed the necessary batteries and a device for charging the batteries.

The invention consists in the installation between an A battery and a B battery of a charger connected through a switch with both batteries, either of which may be charged by actuating the c switch.

The invention further consists in the installation of a voltmeter between said switch and batteries whereby the voltage of either battery may be indicated.

The invention consists further in providing said cabinet with partitions completely separating the three compartments in which sald batteries and charger are positioned.

The invention consists further in the provision of'rneans whereby the direct voltage of either of the batteries may be obtained while said batteries are charging or while the set is being operated.

The invention consists further in means whereby the B battery on loop sets, or sets not using a ground, may be charged While operating the set.

The invention consists further in means whereby the B battery may be used as a whole or separated into a B battery and a C battery.

The invention consists further in certain novel features of construction and arrangement of parts which will be understood readilyby reference to the descripgon of the drawings and to the claims to hereinafter given. f Y

For the purpose'of illustrating the invention, one preferred formthereof is illustrated in the drawings, this form having been found to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which the invention consists can be variously arranged and organized and` the invention is not 11mited to the recise arrangement Aand organ ization of tliese instrumentalities as herein shown and described except as required by the scope of the appended claims.

Of the drawings- Figure 1 Irepresents a plan of a device embodying the principles of the present invention, the cover being shown in open position.

Figure 2 represents a front elevation of the same with the cover closed, a portion at kthe left being broken away.

Figure 3 represents a diagram showing the wiring of the said device.

Figure 4 represents a diagram showing the wiring when two cells are cut out of B battery to forni a C battery.

F1gure 5 represents a plan of the .central portion of the device showing the protect- 0' cover for the charger, and' ings.

In the drawing `10 is a cabinet divided byV the partitions 11, 12,' into three -compartments 13, 14, and 15, said cabinet 10 having hinged thereto a cover 16 provided with the partitions 17 and 18 ada ted to register with the partitions 11, 12, w en the cover 16 is closed. l

The partitions 11, 12, 17 and 18 prevent any spray or gas generated in either compartment from enterin either of the other compartments during te charging of either of the batteries.

In the com artment 15 is positioned an A battery 19 o usual construction, said battery being embedded -in a sea-ling compound 19x filling said compartment to a level a The compartment 13 has positioned therein a box 20 containing a plurality of cells 21 short distance below the top of the cabinet figure 6 represents an elevation of one of a B battery, said cells being embedded in I parafline 20x covered with a layer of sealing compound 21", the top of which preferably is about one half inch below the top of the cabinet 10, thus leaving a space in which may collect any electrolyte spilled in filling or charging the cells 21.

The box 20 rests lupon a shelf 13* near the bottom of the com artment 13.

From the en'd o the cabinet adjacent the compartment 13 extend five binding osts or terminals, 22, 23, 24, 25, and 26, the inding post 22 bein connected to the first negative ole of the battery by wire 22", while the binding post 26 connects by wire 26* to the last positive ole of said B battery which binding post as a 96 voltage. The other binding posts 23, 24, 25, are connected by wires- 23", 24", and 25, to other positive n the front of the cabinet 10 is mounted' a voltmeter 27, and above the same is a 'double pole, double throw knife switch 28,

while the ends of said cabinet are provided with handles 10".

In the central compartment 14 is installed a charger 14x having its negative pole 30 connected by wire 31 to the hinge joint 32 of switch 28, the other hinge joint 33 being Jconnected by Wire 34 to a positive poleof said charger 14".

This char r also has another positive pole 36 connecte by wire 37 tothe positive pole 38 of the A. battery. A

The negative pole 39 of the A battery 1s connected by wire 4() to the switch contact 41.

The positive ole 36 of the charger 14".,is also connected by wire 42 with a positive pole 43 of the voltmeter 27, which has another ositive pole 44 connected by wire 45 with t e switch contact 46.

The contact 47 of the switch 28 is connected by wire 48 to the negative pole 49 of the voltmeter 27. Y

The voltmeter 27 may be of any well known construction and therefore requires no further illustration, it being understood that the poles 43, 44, are in the form of push buttonswhich may be pressed inwardly to obtain a reading, as is usual in some forms of voltmeters.

The switch contact 46 is also connected b wire 50 with the positive pole 51 of the battery, the ne ative pole' 52 of said battery being connecte by wire 53 to the contact 47, which contact is also connected with the switch joint 32 of the switch 28 by means of a wire 55".

When the switch 28 connects with the contact 41 the A battery may be charged and the voltage of said battery may be indicated by pressure upon the pole or button 43 thereo The radio receiving set is hooked up to the binding posts 22, 23, 26, if the detector tube requires a 221/2 voltage of the B battery, and to the binding 22, 24, 26, if a greater voltage for the detector tube is desired, it being understood that under these conditions the binding posts 26 is electrically connected to the amplifier tubes. When less voltage is required forl the amplilier tubes they may be electrically connected to the binding post 25'or 671/2 volts or to the binding post 24 for 45 volts.

The poles of the cells 21 of the B battery are connected by leads 54 and all these cells are connected in series.

If it is desired to utilize one portion of B battery as a C battery, one set of leads 54 at the back of the B battery is Isevered at any desired point, the )oint selected depending on the amount o voltage desired in theC battery, as for instance 2, 4, or 6 volts; one, two or three cells being cut ofi from the remaining cells54. The cells cut off for C battery must include the left cell 2lx in the rear row as this is connected to the terminal or binding post 26.

rlhe C battery negative lead of the re-l ceiving set'is then passed through a notch in the end of cover and either soldered or clamped to t'he negative pole of the selected cell, the C battery positive lead from the set being connected to the binding post 26.

If it is desired to employ in the B battery, the maximum remaining voltage," the proper lead from the receiving set is passed through a notch in the end of cover and either clamped or soldered to the positive pole of cell where the division has been made. Y

lVhen a C battery is formed in this manner it becomes necessary to clamp by means of the clip 55 the negative and positive poles at the point where division has been made whenever it is desired to charge or take a voltage reading of the B battery.

By this means both batteries, B and C, maybe charged at the same time and no switching from one to the other is necessary.

It -must be understood that if the detector tube requires only 221A; volts, said detector tube is wired to the binding post 23, and if it requires 45 volts the wire is secured to binding ost 24, and that in case the amlifier tu s only require 67% volts the wire rom the receiving-set extends to binding post 25 and not to binding post j26.

If any voltage of B battery is desired, other than that obtained from the binding posts 23, 24, 25, 26, a similar clip 55 is clamped to the positive lead of an intermediate cell 21 and connected by a wire to the receiving set.

By means of this hook up any desired voltageu to and including 96 voltsmay be obtaine from the B battery, and this is true for a' slightly less voltage when the C battery is used.'

The charger 14x is provided with a wire 57 having an element 58 which may be conlarly true where the batteries in series u to 120 volts, the chargerl being provided wit a 6 ampere fuse 59 foreach battery to prevent the amperage exceeding a predetermined limit.

The charger is also .provided with a device for rectifying the' alternating curre'nt to a direct current when the element 58 is connected to an alternating current lighting system. The charger is also provided with .a closed core type transformer 66".

As the details of construction of the charger form no art of the lpresent invention, itis deemed) unnecessary to illustrate or describe its make up.

In order to protect the various parts of the charger from injur the compartment 14 has secured therein y screws 61 a perforatedto n tion 63 which may be moved about its hinge connections to give access to the rectifier 60 and the fuses59.` e

When the A battery is being' charged the -rear -fuse 59 isremoved or unscrewed sulficiently to break contact, but vwhen the B battery is'being charged both fuses-59'must be in contact. The rear fuse, 59 must also be unscrewed suiliciently to break contact when the receiving setis 1n use. l n

One particular advant e ofthe devicel is that the A battery may charged vwhile ogeratingthe receiv' set, while another vantage is that theA battery aloo oran set not havin aground.

lngAs allpthe cdiinections of t e device are permanent there is absolutely no opportunity for burning out tubes which is manife'stly a great advanta and this is particuevice is used in connection with a su r hetrodyne receiving set having a plurality of tubes.

There are no moving parts within the v.

1cabinet and consequently the device is noise- It is -very simple to operate, as ,when the A battery is to be charged all that it is necessary to do'is to turn the switch 28 toward the A battery and. by turning-.the

switch toward the 'B battery this latterbattenyhmay be charged.

e cover 16 is deep enough to receivethe clips 55 and enclose the same .when the oover-\16 is closed.

Adjacent the A batter the end wall ofl the cover 16 is provid withv notches 64 through which the wires from Abattery to' plate 62 having a hinged secmay also be l .charged while operating. a receiving set hav.

storage A battery, which occupies considerable space, and is liable to leak andinjure any article with ,which the leaking electrolyte comes into Contact. Or for the same purpose dry cells have been used, but these cells soon deteriorate so as to become useless.

The plate voltage has usually been obtained from a plurality of dry cells in series forming the B battery. These cells are expensive and in course of time deteriorate rapidlyand become useless when the voltage has dropped to a certain point for they cannot berecharged. v

At the present time, it is recogniz' ed that means to be employed to rovide the power for the receiving set isas ollows: v

l, a storage A battery for lighting the fila- Vment of the detector and amplifying tubes;

2, a storage B battery rfor giving the proper voltage' tothe plates; 3, a storage C battery to provide the proper volta e to the grids.

Up to the resent4 time t edproblem has been to providev an eiiicient e vice which Woulduse the alternating, current from a lighting system and charge thevarious storage batteries without disconnecting the same from the `radio receivin set.

It will be noted that in therpresent device the alternating current ma be transformed into a direct 'current which in turn will lcharge either the `A battery or the B and C batteries without disconnecting from the receiving set and' all the various units ofthe device are installed in a single housing Aor cabinet. 4

In using the device the cells of the various` batteries A, B and C must be filled with electrolyte. d

The switch '28 is then turned to left to charge the B battery or the B and C batteries, the button 44 of voltmeter being pressed from time to time until the voltmeter indicates that a voltage of or more,

has been reached.

e The switch 2 8 is then turned toA right to test the A battery volta e, pressing u on the button 43 to see by t e voltmeter t at saidbatter hasfa voltage of 6 or more. d

` Thebin ing post 22 is connected to the negative terminal of the receiving set, and

the bindin post 23 or 24is connected to the detector tu e of said set depending on the er tubes type of tube used, while the ampli are connected to either of the binding posts 24, 25 or 26 as desired. v

The device is then in condition for use to lgive the required power to the receiving set,

p'ovsiodd only theA and B batteries are to u In case a C battery is to be used, the changes previously described herein will be made.

It is believed that the operationand many advantages ofthe invention will be fully apparent without further description.

Having thus described my invention, I claiml. In a device of the class described, the.

negative pole of the A battery, the positive pole of which is electrically connected to a positive pole of the charger, this latter pole being also connected to a positive pole of said voltrneter, said switch also having two contacts at the opposite end thereof, one of which is electrically connected to a positive pole of the voltrneter and also the positive pole of the B battery of which the negative pole is connected to a hinge connection of said switch and also to the other switch contact, this switch contact being also connected to the negative pole of the voltrneter.

2. In a device of the class described, the combination of A and B batteries and a charger adapted to charge either battery;

and a knife switch having its hinge connections electrically connected to the negative pole and a positive pole of said charger and also having a contact electrically connected to the negative pole of the A battery of which the positive pole is electrically con* nected to another positive pole of the charger.

` 3. In a device of the class described, the combination of A and B batteries and a charger adapted to charge either battery; a knife switch having its hinge connections electrically connected to the negative pole and a positive pole of said charger and also having a contact electrically connected to the negative pole of the A battery, otwhich the positive pole is electrically connected to another postive pole of the charger; and a voltnieter having a positive pole electrically connected to a positive pole of the charger and a negative pole electrically connected to a hinge connection of said switch.

Signed by Ine at 746 Old South Bldg., Boston, Massachusetts, this 3rd day of Novexnber, 1924.

ALBERT VORBERG, JR. 

